ESET vs Sophos

In this review, I will put two antivirus software programs up against each other: ESET and Sophos.

While perhaps not as famous or popular with consumers as other industry contenders like Bitdefender or McAfee, both claim longstanding prestige in the antivirus market, especially among business cybersecurity solutions.

ESET focuses its approach on quality scans with low system impact, emphasizing the importance of its lightweight but effective software.

Sophos’ history in this antivirus sector includes 30 years specializing in holistic endpoint security solutions. It has particularly focused on businesses but more recently turned its attention to consumers.

In this review, I will provide a comprehensive examination of both companies’ lines of consumer antivirus. Each service will be evaluated on price, device compatibility, impact on system performance, feature, efficacy against malware, user interface, and customer support.

Below is a brief summary of my findings if you do not have the time to read the full, detailed breakdown.

Who wins between ESET and Sophos?

ESET comes out on top. ESET offers a much more expansive feature list throughout its suites, more effective malware detection and removal, and transparency about what its software is doing on my device.

Here is what I found when comparing ESET vs Sophos:

A Summary: ESET vs Sophos


  • Large suite of AV and computing efficiency features
  • Exceptional performance against live malware samples
  • High ranking among independent AV review sites


  • Remote security management
  • Multi-device coverage
  • Malware scan and deep clean software
Antivirus and Antispyware
Webcam Protection
Password Manager
Ransomware protection
Banking and Payment Protection
Parental Control
Network Attack Protection
Encrypted storage
Automatically update apps
VPNAs a separate subscription
File Shredder
Performance optimization
Identity theft protection
File backup


ESET was founded during the 1990s in Bratislava. In its 28 years of operation, it has focussed on cutting edge antivirus solutions, and as of 2016 had expanded to more than 1,300 employees serving 200 countries and territories worldwide.

Sophos’ was set up in the UK and launched in 1985. Founders Jan Hruska and Peter Lammer began developing new endpoint security techniques during the end of the 1980s and early 1990s.

At the turn of the century, the company reoriented towards providing a wider, more varied antivirus package. At the time of writing it has a workforce of over 3000, operating in over 150 regions globally.

Pricing and Compatibility

ESET Nod32 AntivirusESET Internet SecurityESET Smart Security Premium
$39.99 for one device, +$10 for each extra device$49.99 for one device, +$10 for each extra device$59.99 for one device, +$10 for each extra device
Sophos Free AntivirusSophos Premium Antivirus
Free$45 / year (discounted from $60)

ESET NOD32 Antivirus

NOD32 Antivirus sells itself not only as essential antivirus coverage but also as resource-conservation software. Each of its AV solutions can be customized based on the number of systems, covering one to five devices.

ESET’s NOD32’s one-device coverage is offered on its website for $39.99 for the first year. This price increases by $10 for each subsequent device, capping at $79.99 for five devices

ESET Internet Security

The Internet Security package offers all of the coverage of the NOD32 Antivirus suite alongside a firewall, botnet protection, parental control, antispam and many other features.

This AV suite retails on ESET’s website as “advanced protection” for $49.99 for the first year of one-device-protection. Its price also increases with every extra device added to the coverage, capping at $139.99 for ten different systems.

ESET Smart Security Premium

Smart Security Premium offers its suite for one device at a base price of $59.99 and caps out at $149.99 for 10-device coverage.

Sophos Free Antivirus

The free antivirus tools on offer from Sophos include AI-led real-time antivirus, parental controls, web protection, remote management, and coverage of three different devices.

Sophos Premium Antivirus

Sophos Premium Antivirus covers up to 1-10 devices and costs $60 per year. A 25% discount is available for the first year, reducing the first-year cost to $45.

If you’re happy to lock in for a longer deal, a two-year subscription is available for $78 and a three-year subscription is $99.

Effectiveness against malware

In this section, I will look at how each product deals with cybersecurity threats. This includes simulating how the programs react to trojans, viruses, and worms. For an effective premium antivirus solution, a program should be able to halt different kinds of attacks as quickly and efficiently as possible.

First, I will put ESET and Sophos up against is a set of sample virus test files from the European Institute for Computer Anti-Virus Research (EICAR).

In this test, I want to see how the suites detect and/or block the EICAR files, and the method each one undertakes to do so. After that, I will see how they perform against live malware samples.

The following table shows the performance of each software against the EICAR samples:

Test FileEicar Sample 1Eicar Sample 2Eicar Sample 3Eicar Sample 4

Both products blocked all files in real-time, showing how effective the two different antivirus software are.

In this next table, we can see how the products perform against some actual malware.

The first live sample is a type of adware, which downloads aggressive advertisements onto a system to generate revenue for a hacker. The other two are trojans, which hide in what appear to be legitimate software or files.

Test FileLive Sample 1 (Adware)Live Sample 2 (Trojan)Live Sample 3 (Trojan)

Again, both software blocked these samples in real-time – demonstrating a pair of highly effective malware protection solutions.

The real-time tests tell us how effective each program’s general background protection is against incoming threats, not how well they scan for malware already on the device.

So I turned to the full scan in each program. We measured the time a scan takes to complete, and then pit that against the total number of items scanned in that time.

Test TypeFull Scan Time (minutes)Full Scan # Items Scanned

ESET takes just under an hour and ten minutes to run its full scan in entirety, delving through 930,000 different items in that time. This is a decent number of items to explore in that time, and the transparency that the company provides with this scan is useful knowledge to a consumer.

A full scan run by the Sophos antivirus program takes a meager 15 minutes to complete, which is much shorter than an average full system scan. The length of the scan is surprising, and that is compounded by the fact that no details whatsoever are available on how many items the program scanned in that time. Details are only provided on any threats that are discovered. This is very unusual as all other antivirus software I have used lets you know what has been scanned.

I turned to some industry standard independent benchmark tests from AV-Comparatives. In particular, I looked at the Malware Protection Test which looks at virus samples loaded onto a USB, and the Real World Protection Test that measures how programs cope with online threats.

It should be noted that Sophos was not included in these independent tests. I include these results because of the impressive performance of ESET in these tests, particularly in the real-world test.

When put to the May 2020 Real-World Protection Test, ESET scored a 98.8% success rate, blocking 746 online threats. In the same test, Bitdefender scored a 99.3% success rate.

Impact on PC performance

Next, I’ll weigh the impact an antivirus can have on system performance. To do this, I look at how certain elements are utilized during full system scans. Notably, neither ESET or Sophos offer a “quick scan” feature.

To see how much these programs affect PC performance, I ran each scan and recorded how long they took.

As ESET and Sophos do not offer quick scans like most antivirus programs, I will move on to each program’s full scans, and the differences between them.

Test TypeControl CPU Utilization % (no scan)Control Memory Utilization % (no scan)Full Scan CPU Utilization %Full Scan Memory Utilization %Full Scan Time (minutes)

The CPU utilization impact of ESET’s suite entered at 36%, and its memory utilization taxed the PC an extra 7%. In comparison, Sophos increased the system’s CPU utilization by 19%, and the memory utilization by 4%. These results demonstrate that despite its claims of minimal system impact, ESET is slightly more taxing on one’s system than Sophos.


Both providers offer additional features on top of their antivirus programs.

Overall, ESET earns my favor thanks to its expansive feature list, offering more value for money in the tools department.

Here is a list of the central features offered in both AV programs.


  • Antivirus and Antispyware
  • Advanced Machine Learning
  • Exploit Blocker
  • Advanced Memory Scanner
  • Cloud-Powered Scanning
  • Scan While Downloading Files
  • Idle-State Scanning
  • Host-Based Intrusion Prevention System (HIPS)
  • Script-Based Attack Protection
  • UEFI Scanner
  • Gamer Mode
  • Portable Computer Support
  • Ransomware Shield
  • Webcam Protection
  • Banking & Payment Protection
  • Botnet Protection
  • ESET SysInspector®


  • Malware Remover
  • Artificial Intelligence (AI)
  • Real-Time Antivirus
  • Ransomware Security
  • Banking Protection
  • Privacy Protection
  • Identity Protection
  • Advanced Web Security
  • Parental Web Filtering
  • Remote Management
  • Premium Support
  • Up to 10 Devices

Below are a few of the standout features and tools that each program offers.

ESET Minimal Power Usage

This tool claims several benefits:

  • Small System Footprint: Maintains high performance and extends the lifetime of hardware. Fits any type of system environment. Saves internet bandwidth with extremely small update packages.
  • Gamer Mode: Security automatically switches to silent mode if any program is run in full-screen. System updates and notifications are postponed to save resources for gaming, video, photos or presentations.
  • Portable Computer Support: Postpones all non-actionable pop-up windows, updates and system-hungry activities to preserve system resources so that you can focus on gaming or films.

Sophos Remote Security Management

Sophos is a company that focuses heavily on strong endpoint cybersecurity for businesses. Naturally, this comes with a focus on the ability to swiftly manage one’s own network.

Sophos’ premium protection covers 10 devices. One of these devices can be nominated to manage the security of each of the other devices.

According to its website, Sophos’ Remote Security Management allows one to view and manage system integrity against cybersecurity threats for PCs and Macs that could be in entirely different parts of the world. Through the management device, the central account holder can add systems to the Cloud Management Dashboard and remotely manage security alerts, settings, and run scans across any of those ten devices from any web browser.

Sign up and installation

Both ESET and Sophos have very quick sign up and installation processes. The websites take just a couple of clicks to reach the pages to install the software. Both companies provide free trial options for the premium suites offered in the range of consumer products.

A unique element of Sophos’ AV software is its way of providing a free trial. A standard free trial is of course available for download, but Sophos also has its own online simulation software that can show consumers exactly how its software might operate when put in various cybersecurity scenarios. This allows a potential buyer to see how Sophos’ malware protection works without even having to download a free trial onto their computer.

How easy is the interface to use?

ESET’s interface has a very sleek layout, with very clear text to denote each tab of features.

ESET Antivirus

Sophos has chosen a style of layout different to ESET here, using some lighter themes for its user interface.

If there is one flaw of the aesthetic choice here, it would be that the use of grays and whites creates a much less striking and distinct difference between sections. It also highlights the smaller feature list that Sophos offers relative to ESET.

Customer support

ESET provides 24/7 premium support on its website. A button on the top right of the homepage gives you access to a live chat, email support, a deep knowledge base of FAQs and some professional user guides. These tools are one click at any point on the website.

An easily accessible support base can also be found on Sophos as well. Its support center is found through a single click through on a banner of icons on the top right-hand side of the webpage. Paid technicians are available via live email and chat from 8 a.m. to 8 p.m. EST Monday to Friday for owners of a premium subscription. There is also coverage of general cybersecurity topics and specific FAQs that can be accessed through Sophos’ knowledge base.


In this review, I have put both ESET and Sophos up against a range of tests, checking each functionality against malware, but also every other aspect of consumer utility.

While it performed well against the EICAR and live malware samples, Sophos lacks some basic expectations of a premium antivirus suite, namely no webcam protection and no encrypted storage.

It also is not reviewed by a large portion of popular independent AV testing websites, and a 15-minute full scan with no additional details shared with its user base is not ideal in terms of transparency.

Although it also lacks a quick scan, ESET is very highly ranked by independent Antivirus comparison sites and carries with it a well-earned prestige.

For these reasons, the choice in this review is ESET and its suite of free and premium cyber-security tools.

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